You see advertisements everywhere for Botox injections. Remove unwanted wrinkles. Banish unsightly neck bands. Clear away irksome crow's-feet. Yes, it's true -- a large number of people are having Botox injections to regain a more youthful appearance.

A simple query on an Internet search engine will result in dozens of sites touting the cosmetic wonders of Botox. Although Botox has been used in this manner for years, it was only approved by the U.S. Food and Drug Administration (FDA) for cosmetic use in April 2002. (It has been approved for the treatment of several medical conditions since 1989.)

In this edition of HowStuffWorks, you'll find out what Botox is, how and why it's used and about its connection to botulism.